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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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02-20-2009, 08:59 AM | #1 |
Not Yet Wild
Join Date: Feb 2009
Location: Dallas, Texas
Posts: 59
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Voltmeter vs. State of Charge Meter
I understand that a Voltmeter is better and more accurate to determine when to charge your batteries, so why are there State of Charge Meters out there and shouldn't they be accurate. Is there something out there as accurate as a Voltmeter and as convient as a State of Charge Meter?
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02-20-2009, 09:02 AM | #2 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,406
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Re: Voltmeter vs. State of Charge Meter
There sure should be
Let us know if you find it..... you may find it here ....or.... http://www.kansaswindpower.net/meters.htm |
02-20-2009, 09:04 AM | #3 |
Stay thirsty my friends!
Join Date: Jan 2007
Location: Suburban Chicago
Posts: 24,284
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Re: Voltmeter vs. State of Charge Meter
A state of charge meter IS a voltmeter. It is just smoothed over so the readings don't bounce all over the place as you come in and out of the throttle. You can "calibrate" a SOC meter with your voltmeter so you know at a glance when to charge your pack.
BU had a small digital display voltmeter offered a while back. Don't know any more about it. They still show it on their site: |
02-20-2009, 03:57 PM | #4 |
Not Yet Wild
Join Date: Feb 2009
Location: Dallas, Texas
Posts: 59
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Re: Voltmeter vs. State of Charge Meter
Check out this article:
http://www.otherpower.com/otherpower..._metering.html it states that we should be measuring Amp-Hours. Has anyone heard this? |
02-20-2009, 06:52 PM | #5 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,406
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Re: Voltmeter vs. State of Charge Meter
Quote:
100% 36v = 38.20v and 50% 36v = 36.31v 100% 48v = 50.93v and 50% 48v = 48.41v So buy the cheap meter and monitor your batteries fully charged and drawn down to 50%...then make a mental or physical mark on the meter ..... NOW you have a fully useful meter ...... |
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02-20-2009, 09:00 PM | #6 |
Not Yet Wild
Join Date: Feb 2009
Location: Dallas, Texas
Posts: 59
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Re: Voltmeter vs. State of Charge Meter
I found a Craftsman digital meter at Sears today for $11 dollars. Took a reading at home and the batteries are reading 37.8v and each battery is reading 6.2v or 6.1v. Thats after charging them this past weekend and taking the cart around the block a few times; I would guess 10-15 min run time. Not too bad for a cart I got from a guy that let it sit in a field for the past 6 months.
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02-20-2009, 09:13 PM | #7 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,406
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Re: Voltmeter vs. State of Charge Meter
Quote:
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02-23-2009, 02:54 PM | #8 |
steeplejack x
Join Date: Jan 2007
Location: Republic of Texas
Posts: 3,382
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Re: Voltmeter vs. State of Charge Meter
Not for the budget conscious.
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02-23-2009, 03:53 PM | #9 |
Gone Wild
Join Date: Nov 2008
Posts: 240
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Re: Voltmeter vs. State of Charge Meter
OK here is the problem, SOC is only valid after a battery has been at rest for 4 to 6 hours after a charge or discharge cycle. So basically anything you get is an idiot light or meter.
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04-21-2009, 09:16 PM | #10 |
Not Yet Wild
Join Date: Apr 2009
Posts: 1
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Re: Voltmeter vs. State of Charge Meter
I've been surfing around here educating myself on 36V carts. A friend of Dad's has an EzGo that needs some TLC. Came across this thread and saw something familiar.
Just wanted to give some info on the meter pictured in the post by gornoman. The meter is made by Datel and the part number is DMS-20PC-1-DCM-C I have one of these on my motorcycle to monitor the charging system since it does not even have an idiot light. The meter is completely weatherproof. I bought mine from http://www.digitalmeter.com I see the price has gone up since they were $41 when I bought a year or so ago. Now back to my crash course on batteries and chargers Last edited by flatfour; 04-21-2009 at 09:17 PM.. Reason: spelling |
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state of charge meter, voltmeter |
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